Home / 288,919.36-433,390.38-89,221.96

Finding the Fourth Proportional to 288,919.36, 433,390.38 and 89,221.96

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Solution

The fourth proportional to 288,919.36, 433,390.38 and 89,221.96 is: 133,836.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,919.36 : 433,390.38 = 89,221.96 : x
  2. Step 2: Convert to fraction form
    288,919.36/433,390.38 = 89,221.96/x
  3. Step 3: Cross multiply
    288,919.36x = 433,390.38 × 89,221.96
  4. Step 4: Simplify right side
    288,919.36x = 38,667,939,148.74
  5. Step 5: Solve for x
    x = 38,667,939,148.74/288,919.36
  6. Step 6: Final answer
    x = 133,836.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.